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KA7818AE

3-Terminal 1A Positive Voltage Regulator

Fairchild Semiconductor 

Electrical Characteristics (KA7805AE) (Continued)

Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 10V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.

KA7805AE

Symbol

Parameter

Conditions

Min. Typ. Max. Unit

VO

Output Voltage

TJ = +25°C

4.9

5

5.1

V

Regline Line Regulation(19)

IO = 5mA to 1A, PO ≤ 15W

VI = 7.5V to 20V

VI = 7.5V to 25V

IO = 500mA

4.8

5

5.2

–

5

50

mV

VI = 8V to 12V

–

3

50

TJ = +25°C VI = 7.3V to 20V

–

5

50

Regload Load Regulation(19)

VI = 8V to 12V

–

1.5

25

TJ = +25°C

IO = 5mA to 1.5A

–

9

100

mV

IO = 5mA to 1A

–

9

100

IO = 250mA to 750mA

–

4

50

IQ

Quiescent Current

TJ = +25°C

–

5.0

6.0

mA

∆IQ

Quiescent Current Change

IO = 5mA to 1A

–

–

0.5

mA

VI = 8 V to 25V, IO = 500mA

–

–

0.8

∆V/∆T Output Voltage Drift(20)

VI = 7.5V to 20V, TJ = +25°C

IO = 5mA

–

–

0.8

–

-0.8

–

mV/°C

VN

Output Noise Voltage

RR

Ripple Rejection(20)

f = 10Hz to 100kHz

TA = +25°C

f = 120Hz, IO = 500mA

VI = 8V to 18V

–

10

–

µV/Vo

–

68

–

dB

VDrop

rO

Dropout Voltage

Output Resistance(20)

IO = 1A, TJ = +25°C

f = 1kHz

–

2

–

V

–

17

–

mΩ

ISC

Short Circuit Current

IPK

Peak Current(20)

VI = 35V, TA = +25°C

TJ = +25°C

–

250

–

mA

–

2.2

–

A

Notes:

19. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must

be taken into account separately. Pulse testing with low duty is used.

20. These parameters, although guaranteed, are not 100% tested in production.

12

KA78XXE/KA78XXAE Rev. 1.0.1

www.fairchildsemi.com

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